This medium-length M-LOK® aluminum Picatinny accessory rail section has 9 slots and it is designed for use with all M-LOK compatible handguards and forends. This m-lok picatinny rail section allows you to install various 1913 Picatinny spec rail-mounted accessories such as tactical lights, vertical grips, laser sight, etc. This medium length m-lok picatinny rail is machined from 6061-T6 aluminum and then hard-anodized black for a durable finish. This medium length rail covers 2½ m-lok® slots. The rail is secured with three screws and m-lok® compatible T-nuts. The picatinny rail has rounded profile rail ends for a more comfortable hold when used as a hand stop.